#include <cstdio>
using namespace std;

int n, m, W, L;
int x1i, y1i, x2i, y2i;
int main() {
	freopen("testdata.in", "r", stdin);
	freopen("testdata.out", "w", stdout);
	scanf("%d%d%d%d", &n, &m);
	scanf("%d%d", &W, &L);
	for (int i = 0; i < n; ++i) {
		scanf("%d%d%d%d", &x1i, &y1i, &x2i, &y2i);
		
	}
	fclose(stdin);
	fclose(stdout);
	return 0;
}